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#Load some useful libraries
library(limma)
library(DESeq2)
library(edgeR)
library(data.table)
library(tidyr)
library(magrittr)
library(tidyverse)
library(sjlabelled)
library(sjmisc)
library(ggplot2)
library(compositions)
library(broom)
library(DataCombine)
library(ggsignif)
library(ggpubr)
#import data
countdf <- read.csv(file = 'labs.csv')
rownames(countdf) <- NULL
meta <- read.csv(file = 'labs_metadata.csv')
rownames(meta) <- NULL
full <- read.csv(file = 'labs_full.csv')
rownames(full) <- NULL

#clean-up tables
#prepare for model
#make consistent index/column/label/ordering between tables/matrices
names(countdf)[1] <- 'name'
countdf[countdf==0] <- 0.0000001
names(countdf) <- sapply(str_remove_all(names(countdf),"X"),"[") # remove added X's from PCI names
count_matrix <- countdf
count_matrix <- count_matrix[,2:ncol(count_matrix)]
count_matrix <- as.matrix(count_matrix)
names(full) <- sapply(str_remove_all(colnames(full),"X"),"[")
names(count_matrix) <- sapply(str_remove_all(colnames(count_matrix),"X"),"[")
meta$sex <- factor(meta$sex)
full$sex <- factor(full$sex)
meta$bowel <- factor(as.numeric(factor(meta$bowel, levels = c(1,2,3,4), labels = c(1,2,3,4))))
full$bowel <- factor(as.numeric(factor(full$bowel, levels = c(1,2,3,4), labels = c(1,2,3,4))))
meta <- within(meta, bowel <- relevel(bowel, ref = 3))
full <- within(full, bowel <- relevel(bowel, ref = 3))
as.data.frame(count_matrix)
countdf <- DropNA(countdf)
No Var specified. Dropping all NAs from the data frame.

0 rows dropped from the data frame because of missing values.
meta <- DropNA(meta)
No Var specified. Dropping all NAs from the data frame.

0 rows dropped from the data frame because of missing values.
full <- DropNA(full)
No Var specified. Dropping all NAs from the data frame.

0 rows dropped from the data frame because of missing values.
countdf
meta
full
#design GLM using lmFit and eBayes
#Algorithm provided by and adapted from Christian Diener, PhD:
###########################################################################################################
design <- model.matrix(~bowel + sex + age + BMI_CALC + eGFR, full)  # note the same formula as in corncob
dge <- DGEList(counts=count_matrix)  # where `count_matrix` is the matrix mentioned above
#dge <- calcNormFactors(dge)  # Normalize the matrix (this step only for CORNCOB/microbiome data)
logCPM <- cpm(dge, log=TRUE)  # takes the log of the data
fit <- lmFit(logCPM, design)  # fits the model for all labs
fit <- eBayes(fit)  # stabilizes the variances
###########################################################################################################
#Pre-process for plotting:
#Get results table for Constipation coefficient relative to High Normal BMF:
re_const <- topTable(fit, coef = 2, genelist = countdf$name, sort="p", number="none")  # Select the significant models by coefficient 2
re_low <- topTable(fit, coef = 3, genelist = countdf$name, sort="p", number="none")  # Select the significant models by coefficient 3
re_diarrhea <- topTable(fit, coef = 4, genelist = countdf$name, sort="p", number="none")  # Select the significant models by coefficient 4

indices <- match(rownames(re_const), rownames(meta)) # associate column of protein names with index of protein
re_const[1] <- countdf$name[indices] # associate the protein names with the protein indices
p_const <- re_const[re_const$adj.P.Val < 0.05,] # create df of just significant adj P value results
p_const <- p_const[order(p_const$adj.P.Val),] # order by adj P value
p_const <- p_const[,c('logFC','B','adj.P.Val','ID','P.Value')] # keep only desired columns

#Pre-process for plotting:
#Get results table for Low Normal coefficient relative to High Normal BMF:
re_low <- topTable(fit, coef = 3, genelist = countdf$name, sort="p", number="none")  # Select the significant models by coefficient 3

indices <- match(rownames(re_low), rownames(meta)) # associate column of protein names with index of protein
re_low[1] <- countdf$name[indices] # associate the protein names with the protein indices
p_low <- re_low[re_low$adj.P.Val < 0.05,] # create df of just significant adj P value results
p_low <- p_low[order(p_low$adj.P.Val),] # order by adj P value
p_low <- p_low[,c('logFC','B','adj.P.Val','ID','P.Value')] # keep only desired columns

#Pre-process for plotting:
#Get results table for Diarrhea coefficient relative to High Normal BMF:
re_diarrhea <- topTable(fit, coef = 4, genelist = countdf$name, sort="p", number="none")  # Select the significant models by coefficient 4

indices <- match(rownames(re_diarrhea), rownames(meta)) # associate column of protein names with index of protein
re_diarrhea[1] <- countdf$name[indices] # associate the protein names with the protein indices values
p_diarrhea <- re_diarrhea[re_diarrhea$adj.P.Val < 0.05,] # create df of just significant adj P value results
p_diarrhea <- p_diarrhea[order(p_diarrhea$adj.P.Val),] # order by adj P value
p_diarrhea <- p_diarrhea[,c('logFC','B','adj.P.Val','ID','P.Value')] # keep only desired columns



#Show dfs of significant hits (there are none)
sig_const <- p_const[which(p_const$adj.P.Val < 0.05),]
sig_low <- p_low[which(p_low$adj.P.Val < 0.05),]
sig_diarrhea <- p_diarrhea[which(p_diarrhea$adj.P.Val < 0.05),]
sig_low$bowel <- 'Low Normal'
sig_low
#Main Text Figures
comparisons = list(c("Constipation","High Normal"),c("Low Normal","High Normal"),c("Diarrhea","High Normal"))
titles = list(c('OMEGA-6/OMEGA-3 RATIO'),c('EPA'),c('HOMOCYSTEINE, SERUM'),c('EOSINOPHILS'))

myplots_main <- list()  # new empty list
#annotated only
labs_testanno <- cbind(full[,1],full[,6],as.data.frame(clr(full[,7:ncol(full)][,as.numeric(rownames(sig_low))])))
names(labs_testanno)[1] <- 'public_client_id'
names(labs_testanno)[2] <- 'bowel'
labs_testanno$bowel <- factor(labs_testanno$bowel, levels=c(1,2,3,4), labels = c("Constipation","Low Normal","High Normal","Diarrhea"))
labs_testanno$bowel <- factor(labs_testanno$bowel, levels=c("Constipation","Low Normal","High Normal","Diarrhea"), labels = c("Constipation","Low Normal","High Normal","Diarrhea"))


counter<<-1

sig = function(x){
  if(x < 0.001){"***"} 
  else if(x < 0.01){"**"}
  else if(x < 0.05){"*"}
  else{NA}}

test = function(x,y,z,j) {
  x = NULL
  y = NULL
  
  temp<- names(labs_testanno)[[j+2]]
  temp_size <- merge(labs_testanno[,c(1,2,j+2)],labs_testanno[,c('public_client_id','bowel')])
  temp_size <- temp_size[,c('bowel',temp)]
  temp_size <- temp_size[which(!is.na(temp_size)),]
  temp_size <- length(levels(factor(temp_size$bowel)))
  
  if (counter==1) {
    results = ifelse(nrow(sig_low[which(sig_low['bowel'] == 'Constipation'),]['adj.P.Val'])!=0,
           list(p.value = sig_low[which(sig_low['bowel'] == 'Constipation'),]['adj.P.Val'][[1]]),
           list(p.value = 1))
  }
  else if (counter==2) {
    results = ifelse(nrow(sig_low[which(sig_low['bowel'] == 'Low Normal'),]['adj.P.Val'])!=0,
           list(p.value = sig_low[which(sig_low['bowel'] == 'Low Normal'),]['adj.P.Val'][[1]]),
           list(p.value = 1))
  }
  else {
     results = ifelse(nrow(sig_low[which(sig_low['bowel'] == 'Diarrhea'),]['adj.P.Val'])!=0,
           list(p.value = sig_low[which(sig_low['bowel'] == 'Diarrhea'),]['adj.P.Val'][[1]]),
           list(p.value = 1))
  }
  
  if (temp_size == 2) { #if the # of levels to the metabolite is 2 categories (incl High Normal)
    counter<<-1
    }
  
  if (temp_size == 3) { #if the # of levels to the metabolite is 3 categories (incl High Normal)
    counter<<-counter+1
    if (counter > 2) {counter<<-1}
  }
  
  if (temp_size == 4) { #if the # of levels to the metabolite is all 4 categories (incl High Normal)
    counter<<-counter+1
    if (counter > 3) {counter<<-1}
  }
  
  names(results) <- 'p.value'
  return(results)
}

for (ind in 1:nrow(sig_low)) {
  y_name <- paste(names(labs_testanno)[c(ind+2)],sep="")
  myplots_main[[ind]] <- local({
    plotlim_loweranno = min(labs_testanno[[y_name]])
    plotlim_upperanno = max(labs_testanno[[y_name]])
    plotlim_baranno = plotlim_loweranno - 3.5
    plotlim_marginanno = plotlim_loweranno - 5
    labs_testanno <- labs_testanno[,c('bowel','public_client_id',y_name)]
    plt_anno <- ggplot(data = labs_testanno, aes(x = bowel, y = .data[[y_name]], group = bowel)) +
    scale_x_discrete(guide = guide_axis(n.dodge = 2))+
    geom_jitter(aes(color = bowel),  size = 0.1, cex = 0.05) +
    geom_boxplot(alpha=0.0,outlier.shape = NA) +
    theme(text = element_text(size = 9)) +
    ggtitle(label = str_wrap(titles[[ind]], width = 2)) +
    geom_signif(comparisons = comparisons, map_signif_level = sig, test = 'test', test.args = list(z = comparisons, j = ind), 
                y_position = plotlim_baranno, 
                step_increase = 0.15,  size = 0.5, 
                textsize = 1.5,
                tip_length = c(0,0)) +
    coord_cartesian(ylim=c(plotlim_loweranno,plotlim_upperanno),clip="off")+
    labs(color = "BMF Category", y = ifelse(ind == 1, "Log-Transformed\n Clinical Labs Level",""))+
    guides(colour = guide_legend(override.aes = list(size=7), title.position = 'left', nrow = 1, ncol = 4)) +
      
      
    theme(plot.margin = unit(c(0,0,abs(plotlim_marginanno),0), "cm"),
          legend.title = element_text(size=10), 
          legend.text = element_text(size=7),
          axis.text.x = element_blank(), 
          axis.title.x = element_blank()) +
      
    scale_fill_manual(limits = c("Constipation","Low Normal","High Normal","Diarrhea"), labels = c("Constipation","Low Normal","High Normal","Diarrhea"), values = colors(),
                    drop = FALSE)
  })
}
Warning: Duplicated aesthetics after name standardisation: size
Warning: Duplicated aesthetics after name standardisation: size
Warning: Duplicated aesthetics after name standardisation: size
Warning: Duplicated aesthetics after name standardisation: size
counter <<- 1
figure_main <- ggarrange(plotlist = myplots_main[1:length(myplots_main)], labels = LETTERS[1:4], legend = "top", align = "hv", common.legend = TRUE, nrow = 1, ncol = 4)
Warning in if (x < 0.001) { :
  the condition has length > 1 and only the first element will be used
Warning: Removed 8 rows containing missing values (geom_signif).
Warning in if (x < 0.001) { :
  the condition has length > 1 and only the first element will be used
Warning: Removed 8 rows containing missing values (geom_signif).
Warning in if (x < 0.001) { :
  the condition has length > 1 and only the first element will be used
Warning: Removed 8 rows containing missing values (geom_signif).
Warning in if (x < 0.001) { :
  the condition has length > 1 and only the first element will be used
Warning: Removed 8 rows containing missing values (geom_signif).
Warning in if (x < 0.001) { :
  the condition has length > 1 and only the first element will be used
Warning: Removed 8 rows containing missing values (geom_signif).
figure_main


ggsave(
  "BMFvsLabsMain.png",
  plot = figure_main,
  device = NULL,
  path = NULL,
  scale = 1.2,
  width = NA,
  height = NA,
  units = c("in", "cm", "mm", "px"),
  dpi = 300,
  limitsize = TRUE,
  bg = NULL
)
Saving 8.75 x 5.41 in image

Add a new chunk by clicking the Insert Chunk button on the toolbar or by pressing Ctrl+Alt+I.

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---
title: "Proteomics LIMMA Regression - James Johnson - v1-18-22"
output: html_notebook
---

This is an [R Markdown](http://rmarkdown.rstudio.com) Notebook. When you execute code within the notebook, the results appear beneath the code. 

Try executing this chunk by clicking the *Run* button within the chunk or by placing your cursor inside it and pressing *Ctrl+Shift+Enter*. 

```{r}
#Load some useful libraries
library(limma)
library(DESeq2)
library(edgeR)
library(data.table)
library(tidyr)
library(magrittr)
library(tidyverse)
library(sjlabelled)
library(sjmisc)
library(ggplot2)
library(compositions)
library(broom)
library(DataCombine)
library(ggsignif)
library(ggpubr)
```


```{r}
#import data
countdf <- read.csv(file = 'labs.csv')
rownames(countdf) <- NULL
meta <- read.csv(file = 'labs_metadata.csv')
rownames(meta) <- NULL
full <- read.csv(file = 'labs_full.csv')
rownames(full) <- NULL

#clean-up tables
#prepare for model
#make consistent index/column/label/ordering between tables/matrices
names(countdf)[1] <- 'name'
countdf[countdf==0] <- 0.0000001
names(countdf) <- sapply(str_remove_all(names(countdf),"X"),"[") # remove added X's from PCI names
count_matrix <- countdf
count_matrix <- count_matrix[,2:ncol(count_matrix)]
count_matrix <- as.matrix(count_matrix)
names(full) <- sapply(str_remove_all(colnames(full),"X"),"[")
names(count_matrix) <- sapply(str_remove_all(colnames(count_matrix),"X"),"[")
meta$sex <- factor(meta$sex)
full$sex <- factor(full$sex)
meta$bowel <- factor(as.numeric(factor(meta$bowel, levels = c(1,2,3,4), labels = c(1,2,3,4))))
full$bowel <- factor(as.numeric(factor(full$bowel, levels = c(1,2,3,4), labels = c(1,2,3,4))))
meta <- within(meta, bowel <- relevel(bowel, ref = 3))
full <- within(full, bowel <- relevel(bowel, ref = 3))
as.data.frame(count_matrix)
countdf <- DropNA(countdf)
meta <- DropNA(meta)
full <- DropNA(full)
countdf
meta
full
```


```{r}
#design GLM using lmFit and eBayes
#Algorithm provided by and adapted from Christian Diener, PhD:
###########################################################################################################
design <- model.matrix(~bowel + sex + age + BMI_CALC + eGFR, full)  # note the same formula as in corncob
dge <- DGEList(counts=count_matrix)  # where `count_matrix` is the matrix mentioned above
#dge <- calcNormFactors(dge)  # Normalize the matrix (this step only for CORNCOB/microbiome data)
logCPM <- cpm(dge, log=TRUE)  # takes the log of the data
fit <- lmFit(logCPM, design)  # fits the model for all labs
fit <- eBayes(fit)  # stabilizes the variances
###########################################################################################################
```


```{r}
#Pre-process for plotting:
#Get results table for Constipation coefficient relative to High Normal BMF:
re_const <- topTable(fit, coef = 2, genelist = countdf$name, sort="p", number="none")  # Select the significant models by coefficient 2
re_low <- topTable(fit, coef = 3, genelist = countdf$name, sort="p", number="none")  # Select the significant models by coefficient 3
re_diarrhea <- topTable(fit, coef = 4, genelist = countdf$name, sort="p", number="none")  # Select the significant models by coefficient 4

indices <- match(rownames(re_const), rownames(meta)) # associate column of protein names with index of protein
re_const[1] <- countdf$name[indices] # associate the protein names with the protein indices
p_const <- re_const[re_const$adj.P.Val < 0.05,] # create df of just significant adj P value results
p_const <- p_const[order(p_const$adj.P.Val),] # order by adj P value
p_const <- p_const[,c('logFC','B','adj.P.Val','ID','P.Value')] # keep only desired columns

#Pre-process for plotting:
#Get results table for Low Normal coefficient relative to High Normal BMF:
re_low <- topTable(fit, coef = 3, genelist = countdf$name, sort="p", number="none")  # Select the significant models by coefficient 3

indices <- match(rownames(re_low), rownames(meta)) # associate column of protein names with index of protein
re_low[1] <- countdf$name[indices] # associate the protein names with the protein indices
p_low <- re_low[re_low$adj.P.Val < 0.05,] # create df of just significant adj P value results
p_low <- p_low[order(p_low$adj.P.Val),] # order by adj P value
p_low <- p_low[,c('logFC','B','adj.P.Val','ID','P.Value')] # keep only desired columns

#Pre-process for plotting:
#Get results table for Diarrhea coefficient relative to High Normal BMF:
re_diarrhea <- topTable(fit, coef = 4, genelist = countdf$name, sort="p", number="none")  # Select the significant models by coefficient 4

indices <- match(rownames(re_diarrhea), rownames(meta)) # associate column of protein names with index of protein
re_diarrhea[1] <- countdf$name[indices] # associate the protein names with the protein indices values
p_diarrhea <- re_diarrhea[re_diarrhea$adj.P.Val < 0.05,] # create df of just significant adj P value results
p_diarrhea <- p_diarrhea[order(p_diarrhea$adj.P.Val),] # order by adj P value
p_diarrhea <- p_diarrhea[,c('logFC','B','adj.P.Val','ID','P.Value')] # keep only desired columns



#Show dfs of significant hits (there are none)
sig_const <- p_const[which(p_const$adj.P.Val < 0.05),]
sig_low <- p_low[which(p_low$adj.P.Val < 0.05),]
sig_diarrhea <- p_diarrhea[which(p_diarrhea$adj.P.Val < 0.05),]
sig_low$bowel <- 'Low Normal'
sig_low
```



```{r}
#Main Text Figures
comparisons = list(c("Constipation","High Normal"),c("Low Normal","High Normal"),c("Diarrhea","High Normal"))
titles = list(c('OMEGA-6/OMEGA-3 RATIO'),c('EPA'),c('HOMOCYSTEINE, SERUM'),c('EOSINOPHILS'))

myplots_main <- list()  # new empty list
#annotated only
labs_testanno <- cbind(full[,1],full[,6],as.data.frame(clr(full[,7:ncol(full)][,as.numeric(rownames(sig_low))])))
names(labs_testanno)[1] <- 'public_client_id'
names(labs_testanno)[2] <- 'bowel'
labs_testanno$bowel <- factor(labs_testanno$bowel, levels=c(1,2,3,4), labels = c("Constipation","Low Normal","High Normal","Diarrhea"))
labs_testanno$bowel <- factor(labs_testanno$bowel, levels=c("Constipation","Low Normal","High Normal","Diarrhea"), labels = c("Constipation","Low Normal","High Normal","Diarrhea"))


counter<<-1

sig = function(x){
  if(x < 0.001){"***"} 
  else if(x < 0.01){"**"}
  else if(x < 0.05){"*"}
  else{NA}}

test = function(x,y,z,j) {
  x = NULL
  y = NULL
  
  temp<- names(labs_testanno)[[j+2]]
  temp_size <- merge(labs_testanno[,c(1,2,j+2)],labs_testanno[,c('public_client_id','bowel')])
  temp_size <- temp_size[,c('bowel',temp)]
  temp_size <- temp_size[which(!is.na(temp_size)),]
  temp_size <- length(levels(factor(temp_size$bowel)))
  
  if (counter==1) {
    results = ifelse(nrow(sig_low[which(sig_low['bowel'] == 'Constipation'),]['adj.P.Val'])!=0,
           list(p.value = sig_low[which(sig_low['bowel'] == 'Constipation'),]['adj.P.Val'][[1]]),
           list(p.value = 1))
  }
  else if (counter==2) {
    results = ifelse(nrow(sig_low[which(sig_low['bowel'] == 'Low Normal'),]['adj.P.Val'])!=0,
           list(p.value = sig_low[which(sig_low['bowel'] == 'Low Normal'),]['adj.P.Val'][[1]]),
           list(p.value = 1))
  }
  else {
     results = ifelse(nrow(sig_low[which(sig_low['bowel'] == 'Diarrhea'),]['adj.P.Val'])!=0,
           list(p.value = sig_low[which(sig_low['bowel'] == 'Diarrhea'),]['adj.P.Val'][[1]]),
           list(p.value = 1))
  }
  
  if (temp_size == 2) { #if the # of levels to the metabolite is 2 categories (incl High Normal)
    counter<<-1
    }
  
  if (temp_size == 3) { #if the # of levels to the metabolite is 3 categories (incl High Normal)
    counter<<-counter+1
    if (counter > 2) {counter<<-1}
  }
  
  if (temp_size == 4) { #if the # of levels to the metabolite is all 4 categories (incl High Normal)
    counter<<-counter+1
    if (counter > 3) {counter<<-1}
  }
  
  names(results) <- 'p.value'
  return(results)
}

for (ind in 1:nrow(sig_low)) {
  y_name <- paste(names(labs_testanno)[c(ind+2)],sep="")
  myplots_main[[ind]] <- local({
    plotlim_loweranno = min(labs_testanno[[y_name]])
    plotlim_upperanno = max(labs_testanno[[y_name]])
    plotlim_baranno = plotlim_loweranno - 3.5
    plotlim_marginanno = plotlim_loweranno - 5
    labs_testanno <- labs_testanno[,c('bowel','public_client_id',y_name)]
    plt_anno <- ggplot(data = labs_testanno, aes(x = bowel, y = .data[[y_name]], group = bowel)) +
    scale_x_discrete(guide = guide_axis(n.dodge = 2))+
    geom_jitter(aes(color = bowel),  size = 0.1, cex = 0.05) +
    geom_boxplot(alpha=0.0,outlier.shape = NA) +
    theme(text = element_text(size = 9)) +
    ggtitle(label = str_wrap(titles[[ind]], width = 2)) +
    geom_signif(comparisons = comparisons, map_signif_level = sig, test = 'test', test.args = list(z = comparisons, j = ind), 
                y_position = plotlim_baranno, 
                step_increase = 0.15,  size = 0.5, 
                textsize = 1.5,
                tip_length = c(0,0)) +
    coord_cartesian(ylim=c(plotlim_loweranno,plotlim_upperanno),clip="off")+
    labs(color = "BMF Category", y = ifelse(ind == 1, "Log-Transformed\n Clinical Labs Level",""))+
    guides(colour = guide_legend(override.aes = list(size=7), title.position = 'left', nrow = 1, ncol = 4)) +
      
      
    theme(plot.margin = unit(c(0,0,abs(plotlim_marginanno),0), "cm"),
          legend.title = element_text(size=10), 
          legend.text = element_text(size=7),
          axis.text.x = element_blank(), 
          axis.title.x = element_blank()) +
      
    scale_fill_manual(limits = c("Constipation","Low Normal","High Normal","Diarrhea"), labels = c("Constipation","Low Normal","High Normal","Diarrhea"), values = colors(),
                    drop = FALSE)
  })
}

counter <<- 1
figure_main <- ggarrange(plotlist = myplots_main[1:length(myplots_main)], labels = LETTERS[1:4], legend = "top", align = "hv", common.legend = TRUE, nrow = 1, ncol = 4)


figure_main

ggsave(
  "BMFvsLabsMain.png",
  plot = figure_main,
  device = NULL,
  path = NULL,
  scale = 1.2,
  width = NA,
  height = NA,
  units = c("in", "cm", "mm", "px"),
  dpi = 300,
  limitsize = TRUE,
  bg = NULL
)
```



Add a new chunk by clicking the *Insert Chunk* button on the toolbar or by pressing *Ctrl+Alt+I*.

When you save the notebook, an HTML file containing the code and output will be saved alongside it (click the *Preview* button or press *Ctrl+Shift+K* to preview the HTML file).

The preview shows you a rendered HTML copy of the contents of the editor. Consequently, unlike *Knit*, *Preview* does not run any R code chunks. Instead, the output of the chunk when it was last run in the editor is displayed.
